UNSC Pillar of Autumn (C-709) was a Halcyon-class light cruiser in the UNSC Navy. It was informally referred to as the Autumn, and its name abbreviated to PoA.. Prior to the Fall of Reach, Pillar of Autumn was selected to support Operation: RED FLAG, a SPARTAN-II operation to capture Covenant leaders.
Start from a low level of net carbs to ensure you quickly enter ketosis (~ 20 grams of net carbs per day). When you detect ketosis after about 2-3 days, start adding net carbs (about 5 grams each week) until you detect a very low-level or no ketones (using Ketostix or blood ketone meter).
To attain ketosis, you need to eat a diet that is very low in carbohydrate (amounts will vary depending on the plan you are following and the stage of that plan you are on, but to begin with can be as low as 20 grams a day).